PEREZ B. ISAAC COHEN GERONDI:

Cabalist. The surname "Gerondi" is due to an unwarranted deduction by Jellinek ("Beiträge zur Gesch. der Kabbalah," ii. 64), and is used for the purpose of describing more in detail the author of "Ma'areket ha-Elahut." A certain Perez, who lived toward the end of the thirteenth century, is mentioned as the author of this cabalistic work.